CN104613256A - High-pressure water injection pipeline for oil fields - Google Patents
High-pressure water injection pipeline for oil fields Download PDFInfo
- Publication number
- CN104613256A CN104613256A CN201510073217.XA CN201510073217A CN104613256A CN 104613256 A CN104613256 A CN 104613256A CN 201510073217 A CN201510073217 A CN 201510073217A CN 104613256 A CN104613256 A CN 104613256A
- Authority
- CN
- China
- Prior art keywords
- pipeline
- pipeline body
- conical
- water injection
- steel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
- F16L15/001—Screw-threaded joints; Forms of screw-threads for such joints with conical threads
- F16L15/003—Screw-threaded joints; Forms of screw-threads for such joints with conical threads with sealing rings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
- F16L13/02—Welded joints
- F16L13/0254—Welded joints the pipes having an internal or external coating
- F16L13/0272—Welded joints the pipes having an internal or external coating having an external coating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/18—Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings
- F16L58/182—Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings for screw-threaded joints
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
Abstract
The invention relates to oil field water injection pipelines, in particular to a high-pressure water injection pipeline for oil fields. A pipeline body is a high-strength steel pipeline, transition joints are assembled between the pipeline bodies and at an end of the pipeline body in butt joint with an equipment interface, each transition joint is a low-carbon-steel or low-alloy-steel thick-wall pipe joint, a conical internal thread and a conical external thread are processed at ends where the transition joints are connected with the pipeline body, the transition joints and the pipeline body are in screwed connection through the conical external thread and the conical internal thread, a sealing face in interference fit is formed through a conical face at the rear end of the conical external thread and a conical face at the front end of the conical internal thread, and a groove for welding is processed at an end where each transition joint is connected with the equipment interface. Through butt joint between the transition joints and the equipment interface, the transition joints are matched with a thick-wall steel pipe of the equipment interface, so that high welding performance and reliable sealing performance during docking are guaranteed; compared with a conventional high-pressure water injection pipeline made by a low-carbon-steel or low-carbon-alloy-steel thick-wall seamless steel pipe, the high-pressure water injection pipeline has the advantages of low steel consumption and low material cost.
Description
Technical field
The present invention relates to water injection pipeline, specifically a kind of oil field high pressure water injection pipeline.
Background technique
Water flood recovery technique is by subsurface deposit water filling, supplements stratum energy, increases the one oil recovery process matched therewith of oil recovery factor, be widely adopted in oil extraction process.By the impact of in-place permeability, generally from several MPa to tens MPa not etc., the filling pipe working pressure of indivedual low permeability formation is more than 40MPa for the working pressure of ground filling pipe.
The high pressure water injection station of oil-field flooding technique generally by ground is arranged, is pressurized to required pressure by the water of water quality reaching standard, transports to distributing room for water injection by main pipeline, and high pressure water is transported to each water injection well through branch's filling pipe, noted in stratum after being distributed by water distribution flow process.
Usually the equipment interconnection interface be connected with water injecting pipe is thick walled steel tube, for there is good welding performance when ensureing that water injecting pipe docks with equipment interface, the high pressure water injection pipeline in current each oil field generally adopts 10,20 or the low carbon steel of 16Mn material or the thick-walled seamless steel pipes of low-carbon alloy steel, cause pipe line steel consumption large, cost is high.
Summary of the invention
For the problems referred to above, the invention provides a kind of pipeline body and adopt High Tensile Steel Tube can be suitable for the heavy caliber main pipeline of high oil field water injection technique use and the oil field high pressure water injection pipeline of small-bore lateral.
The technological scheme that the present invention solves the employing of described problem is:
A kind of oil field high pressure water injection pipeline, comprise pipeline body, described pipeline body is High Tensile Steel Tube, is equipped with transit joint between pipeline body and with equipment interface butt end, and described transit joint is low carbon steel or low alloy steel thick walled tube joint; Transit joint and pipeline body connecting end are processed with conical inner screw thread and circular cone outside thread respectively, transit joint and pipeline body are tightened by described circular cone outside thread and described conical inner screw thread and are connected, and form the sealing surface of interference fit by the conical surface of described circular cone outside thread rear end and the conical surface of described conical inner screw thread front end; Transit joint is processed with to weld with equipment interface connecting end uses groove.
Adopt the present invention of technique scheme, compared with prior art, its beneficial effect is:
Be connected by transit joint between pipeline body, between pipeline body with equipment interface, transit joint mates with the thick walled steel tube of equipment interface, good welding performance and reliable sealability when can ensure to dock; Compare the high pressure water injection pipeline that traditional 10,20 or 16Mn material low carbon steel or low-carbon alloy steel thick-walled seamless steel pipes make, there is the advantage that steel consumption is low, the cost of material is low.
As preferably, the present invention further technological scheme can be:
The outer wall of described pipeline body outer wall and transit joint and pipeline body adapter section is coated with external anti-corrosion layer.
The conical seal surface seam areas of described transit joint and described pipeline body is coated with corrosion resistant coating.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention;
In figure: 1-pipeline body, 2-transit joint, 3-outer wall anticorrosive coat, 4-circular cone outside thread, 5-conical inner screw thread, 6-conical seal surface, 7-welding groove.
Embodiment
The present invention is further elaborated for the embodiment provided below in conjunction with accompanying drawing, but embodiment does not form any restriction to the present invention.
See Fig. 1, the oil field high pressure water injection pipeline that the present embodiment provides, be made up of pipeline body 1, transit joint 2, outer wall anticorrosive coat 3, pipeline body 1 adopts High Tensile Steel Tube to make, transit joint 2 adopts has the low carbon steel of good welds performance or low alloy steel thick walled steel tube is made, transit joint 2 wall thickness mates with the thick walled steel tube of equipment interconnection interface, good welding performance and reliable sealability when can ensure to dock; The two ends of pipeline body 1 are processed with circular cone outside thread 4, transit joint 2 and pipeline body 1 connecting end are processed with conical inner screw thread 5, transit joint 2 and pipeline body 1 are tightened by this worm structure and are connected, and the conical seal surface 6 of interference fit is formed by the conical surface of circular cone outside thread 4 rear end and the conical surface of conical inner screw thread 5 front end, conical seal surface 6 realizes gap-free sealed, zero leakage; Transit joint 2 and equipment interface connecting end are processed with and weld with groove 7, and transit joint 2 is welded to connect by the thick walled steel tube of this welding groove 7 with equipment interface, to ensure between pipeline and and equipment interconnection interface between welding quality.
The outer wall of pipeline body 1 and the outer wall of transit joint 2 and pipeline body 1 adapter section are coated with external anti-corrosion layer 3; To meet the requirement of pipeline anticorrosion process.
Conical seal surface 6 seam areas of transit joint 2 and pipeline body 1 can application corrosion resistant coating; Ensure that the metal of seam areas is not corroded by highly corrosive water quality.
The foregoing is only the better feasible embodiment of the present invention, not thereby limit to interest field of the present invention, the equivalent structure change that all utilizations specification of the present invention and accompanying drawing content are done, be all contained within interest field of the present invention.
Claims (3)
1. an oil field high pressure water injection pipeline, comprise pipeline body, it is characterized in that, described pipeline body is High Tensile Steel Tube, be equipped with transit joint between pipeline body and with equipment interface butt end, described transit joint is low carbon steel or low alloy steel thick walled tube joint; Transit joint and pipeline body connecting end are processed with conical inner screw thread and circular cone outside thread respectively, transit joint and pipeline body are tightened by described circular cone outside thread and described conical inner screw thread and are connected, and form the sealing surface of interference fit by the conical surface of described circular cone outside thread rear end and the conical surface of described conical inner screw thread front end; Transit joint is processed with to weld with equipment interface connecting end uses groove.
2. high pressure water injection pipeline in oil field according to claim 1, is characterized in that, the outer wall of described pipeline body outer wall and transit joint and pipeline body adapter section is coated with external anti-corrosion layer.
3. high pressure water injection pipeline in oil field according to claim 1, is characterized in that, the conical seal surface seam areas of described transit joint and described pipeline body is coated with corrosion resistant coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510073217.XA CN104613256A (en) | 2015-02-12 | 2015-02-12 | High-pressure water injection pipeline for oil fields |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510073217.XA CN104613256A (en) | 2015-02-12 | 2015-02-12 | High-pressure water injection pipeline for oil fields |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104613256A true CN104613256A (en) | 2015-05-13 |
Family
ID=53147842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510073217.XA Pending CN104613256A (en) | 2015-02-12 | 2015-02-12 | High-pressure water injection pipeline for oil fields |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104613256A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822869A (en) * | 2016-06-14 | 2016-08-03 | 西南石油大学 | Buckling and bending resistant steel tube for construction |
| CN106090469A (en) * | 2016-06-17 | 2016-11-09 | 高彬 | Conduit coupling and include the pipe network of this conduit coupling, pipe connecting method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287143A (en) * | 2011-07-21 | 2011-12-21 | 大庆福斯特科技开发有限公司 | Oil/sleeve pipe threaded connection joint with air-tight structure |
| CN202090850U (en) * | 2011-05-18 | 2011-12-28 | 首都航天机械公司 | Pipeline connecting piece between thread and conical seal surface with limited circular bead |
| CN203403832U (en) * | 2013-07-12 | 2014-01-22 | 成都望晖石油管有限责任公司 | Air-tight seal screwed joint |
| CN203463035U (en) * | 2013-07-05 | 2014-03-05 | 宝鸡石油钢管有限责任公司 | Screwed joint for petroleum casing pipe |
| CN204459520U (en) * | 2015-02-12 | 2015-07-08 | 唐山冀东石油机械有限责任公司 | Oil field high pressure water injection pipeline |
-
2015
- 2015-02-12 CN CN201510073217.XA patent/CN104613256A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202090850U (en) * | 2011-05-18 | 2011-12-28 | 首都航天机械公司 | Pipeline connecting piece between thread and conical seal surface with limited circular bead |
| CN102287143A (en) * | 2011-07-21 | 2011-12-21 | 大庆福斯特科技开发有限公司 | Oil/sleeve pipe threaded connection joint with air-tight structure |
| CN203463035U (en) * | 2013-07-05 | 2014-03-05 | 宝鸡石油钢管有限责任公司 | Screwed joint for petroleum casing pipe |
| CN203403832U (en) * | 2013-07-12 | 2014-01-22 | 成都望晖石油管有限责任公司 | Air-tight seal screwed joint |
| CN204459520U (en) * | 2015-02-12 | 2015-07-08 | 唐山冀东石油机械有限责任公司 | Oil field high pressure water injection pipeline |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822869A (en) * | 2016-06-14 | 2016-08-03 | 西南石油大学 | Buckling and bending resistant steel tube for construction |
| CN106090469A (en) * | 2016-06-17 | 2016-11-09 | 高彬 | Conduit coupling and include the pipe network of this conduit coupling, pipe connecting method |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150513 |